Abstract
THE usual method of measuring the dimensions of microscopic objects is to compare them against an eye-piece scale or to use a calibrated filar micrometer eye-piece. Such methods are not capable of great accuracy and are inherently slow and poorly adapted to statistical problems. In order to plot the size distribution of a large number of particles, it is necessary to bring each in turn to the centre of the field and to set it against the scale.
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References
McGinn, J. H., U.S. Patent 2,730,008 (1956).
Timbrell, V., Nature, 170, 318 (1952).
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BARER, R. A New Micrometer Microscope. Nature 188, 398–399 (1960). https://doi.org/10.1038/188398a0
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DOI: https://doi.org/10.1038/188398a0
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